whole new ballgame, a

a (whole) new ballgame

A situation that is completely different from what one is used to or expecting. Living away from home is a whole new ballgame for most young adults. I used to babysit, but having a child of my own is a new ballgame.
See also: ballgame, new
Farlex Dictionary of Idioms. © 2015 Farlex, Inc, all rights reserved.

whole new ballgame, a

A completely altered situation, as in It will take a year to reassign the staff, and by then some will have quit and we'll have a whole new ballgame . This expression comes from baseball, where it signifies a complete turn of events, as when the team that was ahead falls behind. [Colloquial; 1960s]
See also: new, whole
The American Heritage® Dictionary of Idioms by Christine Ammer. Copyright © 2003, 1997 by The Christine Ammer 1992 Trust. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
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